Finding the Fourth Proportional to 111,643.14, 153,961.95 and 73,335.09
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Solution
The fourth proportional to 111,643.14, 153,961.95 and 73,335.09 is: 101,133.07
Step by Step Solution
- Step 1: Write the proportion equation
111,643.14 : 153,961.95 = 73,335.09 : x - Step 2: Convert to fraction form
111,643.14/153,961.95 = 73,335.09/x - Step 3: Cross multiply
111,643.14x = 153,961.95 × 73,335.09 - Step 4: Simplify right side
111,643.14x = 11,290,813,459.83 - Step 5: Solve for x
x = 11,290,813,459.83/111,643.14 - Step 6: Final answer
x = 101,133.07
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.